Reznor 129853 Fan Blade

The Reznor 129853 is a precision-engineered 10-inch axial fan blade designed specifically for compatible Reznor unit heaters and HVAC systems. Featuring a 5-blade configuration, this component is balanced to maintain optimal airflow across the heat exchanger while minimizing motor strain and operational noise. When replacing a damaged or pitched blade, ensuring an exact OEM Reznor replacement part match is critical for maintaining the designed static pressure and CFM output of the unit. This fan blade is constructed from high-grade materials to resist corrosion in demanding commercial and industrial environments. It is puller-aligned for a standard motor shaft fit, ensuring a secure seating that prevents vibration-induced bearing wear. For contractors performing preventative maintenance or emergency repairs, verifying the fan blade pitch and diameter is essential for restoring system efficiency and preventing high-limit trips or motor overheating in Reznor gas-fired heaters.

• OEM Airflow Calibration: Specifically engineered to match the motor torque and RPM requirements of Reznor unit heaters.
• Enhanced Durability: Robust construction prevents blade deformation under high-velocity air movement.
• System Longevity: Proper balance reduces radial load on the motor bearings, extending the life of the blower assembly.
• Efficient Heat Transfer: The 5-blade design ensures consistent air distribution across the heat exchanger for maximum BTU output.

What causes a fan blade to fail in a Reznor heater?
Most failures result from debris impact, excessive vibration due to a worn motor shaft, or corrosion that alters the blade’s weight distribution and pitch.

How do I confirm the 129853 is the correct fit for my model?
Cross-reference the part number in your specific unit's manual. This 10-inch blade is typically found in smaller-sized Reznor unit heaters where precise clearance is required.

Can I use a generic 3-blade fan instead?
No. Changing the blade count or pitch alters the motor's amperage draw and can lead to premature motor failure or insufficient airflow across the heat exchanger.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.